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22666 Glucose

Glucose
Test Code: GLU
Synonyms/Keywords
 Blood Sugar, GLU​, i-Stat Glucose
Useful For

Glucose measurements are used in the diagnosis and treatment of carbohydrate metabolism disorders, including diabetes mellitus, neonatal hypoglycemia and idiopathic hypoglycemia, and pancreatic islet cell carcinoma.​

This test is used for non-fasting patients, if patient is fasting order FBS.

Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
No​ ​ Plasma/Serum​ Lithium-heparin Plasma Separator (PST)​, Serum Separator Tube (SST)
Lithium or Sodium-heparin Green Top (GTT), Red Top Tube (RTT),
Gray Top Tube (GYTT)​
1 mL​ 0.3 mL​
​i-Stat only = Whole Blood ​Lithium-heparin Green Top Tube (GTT) ​1 mL ​200 uL
Collection Processing Instructions
Indicate time of collection.
Serum/Plasma to be obtained from blood collected in tubes without gel barriers must be centrifuged and removed from cells within one hour of collection.
Serum/Plasma to be obtained from blood collected in gel barrier tubes must be centrifuged within one hour of collection.
 
Stat orders will be run locally on the i-Stat.  Non-stat orders will be sent to Marshfield for analysis.
i-Stat:  Sample must be tested within 10 minutes of collection.
Specimen Stability Information
Specimen Type Temperature Time
Plasma/Serum​ ​ ​ Ambient​ 5 days​
Refrigerate​ 7 days​
Frozen​ 1 year​
​i-Stat Whole Blood ​Ambient ​10 minutes
Rejection Criteria
Specimens in contact with cells for more than 2 hours without a preservative (fluoride/oxalate)
​i-Stat testing:  clotted samples
​i-Stat testing:  anticoagulants other than lithium heparin
Interference
Sulfasalazine may interfere with Dimension Glucose assays (Regional labs) and cause falsely depressed results.
For patients receiving treatment, venipuncture should occur prior to drug administration to prevent this interference.
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Bloomer​ ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Cadott ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Chetek ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Chippewa Falls ​​Monday through Friday ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Colby/Abbotsford ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Cornell ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Cumberland ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Diagnostic Treatment Center ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Eagle River ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Eau Claire ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Flambeau Hospital ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Hayward ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat 
​Ladysmith Medical Center ​​Monday through Sunday ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Lake Hallie ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Lakeview Medical Center ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
Marshfield​ Monday through Sunday​ Less than 2 hours​ Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Mercer ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Merrill ​Monday through Saturday ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Minocqua ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Mosinee ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Neillsville​Monday through Sunday​​Less than 2 hours​​Modified Hexokinase Method/Siemens Dimension​
​Oakwood ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Phillips ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Rhinelander ​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours​
Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat​
​Stettin ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Stevens Point ​​Monday through Friday ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Wausau ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
Wisconsin Rapids​ ​​Monday through Friday ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Wittenberg ​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
Reference Range Information
Performing Location Reference Range
All Performing Sites 70-99 mg/dL (fasting)​
​See Critical Value List for list of current critical values ​
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
82947   ​
Synonyms/Keywords
 Blood Sugar, GLU​, i-Stat Glucose
Ordering Applications
Ordering Application Description
​Centricity ​Glucose, Blood
​Cerner ​Glucose Random
​COM ​Glucose, Random - Blood
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Fasting Required Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
No​ ​ Plasma/Serum​ Lithium-heparin Plasma Separator (PST)​, Serum Separator Tube (SST)
Lithium or Sodium-heparin Green Top (GTT), Red Top Tube (RTT),
Gray Top Tube (GYTT)​
1 mL​ 0.3 mL​
​i-Stat only = Whole Blood ​Lithium-heparin Green Top Tube (GTT) ​1 mL ​200 uL
Collection Processing
Indicate time of collection.
Serum/Plasma to be obtained from blood collected in tubes without gel barriers must be centrifuged and removed from cells within one hour of collection.
Serum/Plasma to be obtained from blood collected in gel barrier tubes must be centrifuged within one hour of collection.
 
Stat orders will be run locally on the i-Stat.  Non-stat orders will be sent to Marshfield for analysis.
i-Stat:  Sample must be tested within 10 minutes of collection.
Specimen Stability Information
Specimen Type Temperature Time
Plasma/Serum​ ​ ​ Ambient​ 5 days​
Refrigerate​ 7 days​
Frozen​ 1 year​
​i-Stat Whole Blood ​Ambient ​10 minutes
Rejection Criteria
Specimens in contact with cells for more than 2 hours without a preservative (fluoride/oxalate)
​i-Stat testing:  clotted samples
​i-Stat testing:  anticoagulants other than lithium heparin
Interference
Sulfasalazine may interfere with Dimension Glucose assays (Regional labs) and cause falsely depressed results.
For patients receiving treatment, venipuncture should occur prior to drug administration to prevent this interference.
Useful For

Glucose measurements are used in the diagnosis and treatment of carbohydrate metabolism disorders, including diabetes mellitus, neonatal hypoglycemia and idiopathic hypoglycemia, and pancreatic islet cell carcinoma.​

This test is used for non-fasting patients, if patient is fasting order FBS.

Reference Range Information
Performing Location Reference Range
All Performing Sites 70-99 mg/dL (fasting)​
​See Critical Value List for list of current critical values ​
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Bloomer​ ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Cadott ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Chetek ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Chippewa Falls ​​Monday through Friday ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Colby/Abbotsford ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Cornell ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Cumberland ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Diagnostic Treatment Center ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Eagle River ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Eau Claire ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Flambeau Hospital ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Hayward ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat 
​Ladysmith Medical Center ​​Monday through Sunday ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Lake Hallie ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Lakeview Medical Center ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
Marshfield​ Monday through Sunday​ Less than 2 hours​ Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Mercer ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Merrill ​Monday through Saturday ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Minocqua ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Mosinee ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Neillsville​Monday through Sunday​​Less than 2 hours​​Modified Hexokinase Method/Siemens Dimension​
​Oakwood ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Phillips ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Rhinelander ​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours​
Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat​
​Stettin ​​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
​Stevens Point ​​Monday through Friday ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Wausau ​Monday through Sunday​ ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
Wisconsin Rapids​ ​​Monday through Friday ​Less than 2 hours​ ​Modified Hexokinase Method/Siemens Dimension
​Wittenberg ​Monday through Friday
1 day (sent to Marshfield)
* stat order on i-Stat run locally = Less than 2 hours
​Hexokinase-UV/NAD Endpoint Assay/ Beckman AU
​Amperometrical-Enzymatic/i-Stat
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
82947   ​
For most current information refer to the Marshfield Laboratory online reference manual.